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/* Store current floating-point environment and clear exceptions.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <fenv_libc.h>
int
feholdexcept (fenv_t *envp)
{
fenv_union_t u;
/* Get the current state. */
u.fenv = *envp = fegetenv_register ();
/* Clear everything except for the rounding mode and non-IEEE arithmetic
flag. */
u.l[1] = u.l[1] & 7;
/* Put the new state in effect. */
fesetenv_register (u.fenv);
return 0;
}
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